1641042042 has 32 divisors (see below), whose sum is σ = 3430494720. Its totient is φ = 522358320.

The previous prime is 1641042031. The next prime is 1641042043. The reversal of 1641042042 is 2402401461.

It is a happy number.

It is a super-2 number, since 2×1641042042² = 5386037967223059528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641042043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75817 + ... + 95027.

It is an arithmetic number, because the mean of its divisors is an integer number (107202960).

Almost surely, 2^1641042042 is an apocalyptic number.

1641042042 is an abundant number, since it is smaller than the sum of its proper divisors (1789452678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641042042 is a wasteful number, since it uses less digits than its factorization.

1641042042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19858.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1641042042 is about 40509.7771161481. Note that the first 3 decimals coincide. The cubic root of 1641042042 is about 1179.5234219285.

The spelling of 1641042042 in words is "one billion, six hundred forty-one million, forty-two thousand, forty-two".